{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Chemical"], "input": "Serum gamma - glutamyl transferase , malondialdehyde level and activity of glutathione S - transferase in erythrocytes were lowered at day 27 and the concentration of total plasma SH - groups was higher on day 10 ."}
{"Chemical": ["S", "malondialdehyde", "glutathione", "SH"]}